Form 4562, MACRS depreciation for AIRBNB capital improvements

[Glenn Cosburn]

We spent $40,000 to restructure our house (basically combine two bedrooms to an airbnb unit). I assume I use form 4562 to report the start of depreciation of these capital improvements. If so, I was wondering how to fill out Part III. ie. I guess I use "h. residential rental property", but at what recovery period? (27.5?)..and what convention and method. Any help would be greatly appreciated..